A moderator reflector hoisting transfer system and hoisting positioning and transfer method

Abstract

The invention relates to a maintaining device for a moderator reflector installed in a helium container and a maintaining method, in particular to a lifting transporting system for a moderator reflector and a lifting positioning and transporting method. The lifting transporting system conducts lifting, transporting and maintaining conveniently and mainly comprises a lifting and transporting device, a storage lead tank, an industrial endoscope, a lifting device, a lifting shielding case and a matched plate. The lifting device is mainly composed of a lifting platform, an X-axis drive device, a Y-axis drive device, a Z-axis lifting block device and a perpendicular lifting tool. The lifting shielding case is a large cylindrical tank body jointed at the bottom of the lifting platform. The upper surface of the matched plate and a supporting frame of the lifting shielding case are connected and fixed through bolts. The lower surface of the matched plate and the helium container are jointed and positioned through pins. The lifting device is composed of a pair of linear steel rails, a crane cross beam, a laser ranging sensor and a moving crown block. According to the lifting transporting system for the moderator reflector and the lifting positioning and transporting method, the exposure dose of working personnel is greatly reduced, the remote control alignment difficulty of the crown block is greatly lowered, cost is reduced, and maintaining efficiency is improved.

Description

technical field [0001] The invention relates to a maintenance device and maintenance method for a moderator reflector installed in a helium container, in particular to a moderator reflector installed in a helium container with super large, super heavy and super strong radiation, which can be conveniently hoisted, transported and maintained A moderator reflector hoisting and transferring system and a method for hoisting, positioning and transferring. Background technique [0002] Neutrons are one of the important probes for people to understand the microstructure and motion state of matter. The main goal of the China Spallation Neutron Source (hereinafter referred to as CSNS) target station is to efficiently generate and utilize neutrons to serve the scientific application of neutrons; As my country's first pulsed neutron source based on proton source acceleration, the CSNS project will surely lead to the breakthrough and development of a large number of important key technolo...

AI Technical Summary

Problems solved by technology

The moderator reflector plug-in is activated in the radiation environment, and some activated substances even have to decay for hundreds of years; the moderator reflector plug-in is a large-scale equipment with a complex structure, and various pipes are arranged around it, with a total weight of about 33 tons. The maximum diameter is 1300mm, the minimum diameter is 1000mm, and the overall height is 5411mm; the plug-in structure of the moderator reflector is installed in the helium container, and the design life is 10 years. The research and development technology of radiation-powered manipulators and robots is immature, and it must be imported from abroad at a huge cost, and the maintenance and replacement of large-scale radioactive components in this environment is the first in China; The maintenance process of hoisting and transporting the moderator reflector is in a hot chamber environment, and the entire maintenance and replacement process must be operated remotely. Therefore, there is a need for a hoisting and transporting equipment with a practical design that can improve the replacement efficiency and reduce the cumulative irradiation time of the staff. And hoisting and transfer process to lift the moderator reflector from the helium container and transfer it to the storage facility

Images